Brake-shoe.



G. D. PBTTIS.

BRAKE SHOE. j

APPLICATION FILED JULY 24, 1912.

1,065,714. Patented June 24,1913.

I 27EETSSHEET 1.

G. D. PETTIS.

BRAKE SHOE.

APPLICATION nun JULY 24, 1912.

Patented June 24,1913.

2 SHEETSSHEET 2.

PATE

CLIFTON D. PE'ITIS, OF CHICAGO, ILLINOIS.

BRAKE-slice.

Specification of Letters Patent.

Patented June 24, 1913.

Application filed July 24, 1912. Serial No. 711,305.

To all whom it may concern.

Be it known that I, CLIFTON D. PE'rrIs, a citizen of the United States, and a resident of the city of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Brake- Shoes, of which I do declare the following to be a full, clear, and exact description, reference being had to the accompanying drawing, forming part of this specification.

The present invention has relation more particularly to that class of brake shoes for railway cars in which provision is made for reinforcing or strengthening the castmctal body of the shoe, and the object of the present invention is to provide an improved construction of end lug whereby the shoe is i connected at its ends to the brake head.

The invention consists in the features of novelty hereinafter described, illustrated in the accompanying drawing and particularly pointed out in the claims at the end of this specification. I

In an application filed by me of even date herewith, Serial No. 711,304, I have described and claimed certain generic features of the invention hereinafter described.

Figure l is a side view of a brake shoe embodying my invention. Fig. 2 is a plan view. Fig. 3 is a detail plan View of one end of the reinforcing back plate of the shoe.

Fig. 4 is a detail plan view of the blank" from which my end lug is formed. Fig. 5

is a view of the end lug after it has been folded and in readiness to be attached to the reinforcing back plate. Fig; 6 is a view in vertical section on line b 6-6 of Fig. 2 through the end portion of the shoe. Fig. 7 is a perspective view showin the end lug attached to the reinforcing bac plate of the shoe and in readiness to have the cast metal body of the shoe cast thereon. Fig. 8 is a plan view of the blank for the manufacture of a modified form of the invention. Fig. 9 is a to view of an attaching lug made from the lilank shown in Fig. 8. Fig. 10 is a view in end elevation of the lug shown. in Fig. 9. Fig. 11 is a view in central section on line 11l1 of Fig. 13, part of the body of the brake shoe being also shown. Fig. 12 is a view in section on line 12-12 of Fig. 13. Fig. 13 is a perspective view showing the end portion 0 a reinforcing back late'having attached thereto the form of ug shown in Figs. 8 to 12.

The body 10 of the shoe may be of cast metal and may have a center lug 11 cast integral therewith, or may have a center lug of any desired character. -As shown, the reinforcing back plate 12, which is em bedded in the cast metal body of the shoe during the casting operation, is provided ad acent each of its ends with a plurality of slots or openings 13, 14, 15 and 16 to receive {he locking members of my improved end WVhile my improved end lug may be made as a malleable casting, I prefer to form it from a blank of ductile metal of substanitiallyithe shape illustrated in Fig. & of the drawings. This blank comprises a body portion adapted to be folded lengthwise and centrally along theline 17 to form the two thicknesses 18 and 19 of the wall that projects from the base portion of the lug. This base portion 20 will be folded along the line 21 so as to extend at substantially with the base 20 are formed the brace walls 22 and 23 that will be turned outward along the lines 2 1 and 25 until they extend at approximately right angles to the projecting wall formed of the thicknesses of metal or members 18 and 19. The base 20 and the brace .walls 22 and 23 comprise a member that projects from the back of the shoe and is adapted to enter the usual end slot in the end of the brake head. To permit the brace walls 22 and 23 to be bent outward, the metal plate will be out along the lines 26 and 27, as shown in Fig. 4. At the end of right. anglesto the projecting wall and integral the base portion 20 is formed a locking the projecting wall of the two thicknesses v 18 and 19, as shown in Figs. 6 and 7 of the drawings. The base member 20 will be bent .along the line 21, the brace walls 23 will be bent outwardly along the lines 24 and 25 and the locking member 30 will be turned downwardly at right angles to the base 20, as shown'in Fig. 5. With the parts in the osition shown 1n Fig. 5, the locking mem- Eer 31- will be passed throughthe slot 13 of the reinforcing back plate 12 the locking members 3% and 35 will be passed respectively through the slots i l and 15 of the back plate, and the locking member 30 will be passed through the slot 16 of the back plate; after which the locking member 31 will be bent against the underside of the back plate 12 and the locking member 30 will be passed through the hole 82 out the locking member 31, and its free end will be bent against the tree end of the locking member 31, as shown in Figs. 6 and 7. The locking members 34: and 35 will be bent against the inner face of the back plate 12, as shown in Fig.7, and, if desired, the locking members may be welded by electricity, or many other suitable manner, to the back plate.

lVhen my improved lug has been secured to the back plate, as illustrated in Fig. 7, the back plate will be placed in a mold and the cast metal to form the body 10 of the shoe will be cast about the inner face and edges of the back plate 12, in manner well understood by those familiar with the manufacture of reinforced brake shoes.

W hen my improved locking lug has been attached to the back plate, it will be firmly interlocked therewith so'that all danger of the breaking oil or loosening of the lug will be edectively prevented. The two thicknesses 18 and 19 of ductile metal will give great strength to resist end thrusts and the brace walls 22 and 23 will afiord efl'ective means for engagement with the brake head.

In the modified form of the invention illustrated in Figs. 8 to 13 of the drawings,

the attaching lug is preferably formed from a blank of plate metal of the shape shown in Fig. 8. This blank comprises a part 18 integral with which is formed a locking member 31 having an opening 32 formed therein, and from the part 1S project the locking members 34% and 35 The blank also comprises the parts 19 and 19 adapted to be folded over against the part 18 so as to give a double thickness to the wall of the lug that extends transversely of the body 10 of the brake shoe. From the parts 19" and 19' project the locking members 34 and 35* which, when the parts 19 and 19 are folded against the part 18, will come parallel with the locking members 349 and 35 To permit the parts 19 and 19 to be folded onto the part 18, the blank will be bent along the line 40 and will be bent also along the lines 11, l2, l3 and ll. The bending of the metal blank upon the lines 41, 42, 43 and l produces the U-shaped or channel shaped portion 45 (see Fig. 9) that extends at substantially right angles to the transverse wall of the body of the lug, and, integral with this portion 45, is formed a locking member 46. After the blank is bent, the projecting, ll-shaped portion 45 therelinear/iaof is preferably shaped within a suitable die to slightly incline the side walls thereof, as indicated in Figs. 9 and 10, so that this lug will properly lit the correspondingly shaped end slot in the end of the brake head. When the blank shown in Fig. 8 is folded, as above described, the parts will occupy the positions shown in Figs. 9 and 10 of the drawings, and the locking members 31 3 1-, 35 3 t 35' and 46 will be'passed through the holes formed for the purpose in the reinforcing back plate 12 of the brake shoe, after which the locking member 31 will be bent downward against the inner face of the back plate, as shown in l igs ll and 13 of the drawings, the locking member 4L6 will be passed through the holes 32 of the locking member 51 and bent downward against the member 31 and the locking members 3 1 and 35", and El", 35 will be oppositely bent, as shown in Fig. 13 of the drawings. When the lug has thus been secured to the back plate, the parts will be placed within a mold and the cast metal to form the body 10 of the brake shoe will be cast about the back plate, as shown in Fig. 11' of the drawings. By this form of the invention, as in that hereinbcfore described, an exceedingly strong and effective construction of attaching lug is provided.

ill; will be understood, of course, that when my improved lug is to be formed from malleable metal, it will be cast of substantially the shape shown in Figs. 5 and 10 of the drawings.

@bviously, the details of construction above set out may be varied without departing from the spirit of the invention, and features of the invention may be employed without its adoption as an entirety.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination with a brake shoe, of an attaching lug formed of ductile metal having a wall extending transversely of the shoe and having a central part projecting inwardly from said wall, said wall and said inwardly projecting part having members extending therefrom and adapted to be embedded in the cast metal body of the shoe.

2. The combination with a brake shoe, of an attaching lug formed of ductile metal and having a wall extending transversely of the shoe and projecting from the back thereof,

a member formed integral with said wall and extending from the central portion thereof toward the center of the shoe, said member also projecting from the back to engage the brake head, and fastening members extending inwardly from said lug.

The combination with :1 brake shoe having a reinforced back, of an attachin lug formed of ductile metal having a wall extending transversely of the shoe and pro jecting from the back thereof, a member formed integral with said wall and extend ing from the central portion thereof toward the center of the shoe, said member also projecting from the back to engage the brake head, and fastening members extendin inwardly from said lug and through the ack' plate of the shoe and interlocked therewith.

4. The combination with a brake shoe, of an attaching lug formed of ductile metal and having a wall extending transversely of the shoe and projecting from the back thereof, a member formed integral with said wall and extending from the central portion thereof toward the center of the shoe, said member also projecting from the back to engage the brake head, and fastening members extending inwardly from said lug and through the back plate, certain of said fastening members being interlocked with each other. i

5. The combination with a brake shoe of a back plate having openings adjacent its end and an attaching lu formed of ductile metal and having a wal extendin across said back plate and a part extendlng centrally' from said wall toward the center of the shoe, and fastening members integral with said lug and extending through the openings of the back plate;

6. The combination with a brake shoe of an attaching lug formed of ductile metal having a base portion, a wall rojecting from said base portion, brace wal s extending from the central part of said projecting wall, and members extending from said projecting wall and adapted to be embedded in the cast metal body of the shoe.

7. The combination with a brake shoe of an attaching lug formed of ductile metal having a base portion, a wall projecting from said base portion, brace walls extending from the central part of said projecting wall and members extending from said base portion and said projecting wall and adapted to be embedded in the cast metal body of the shoe.

' 8. The combination with a brake shoe, of

an attaching lug formed of ductile metal having a wall of double thickness extending transversely of the shoe and having a central part projecting inwardly from said wall, said wall and said inwardly projecting part having members extending therefrom and adapted to be embedded in the cast metal body of the shoe.

' CLIFTON D. PETTIS. Witnesses:

GEO. P. FISHER,

KATHARINE GERLACH. 

